Effects of cigarette smoke on color change of resin composites (original) (raw)

American journal of dentistry, 2018

Abstract

To evaluate the color change caused by cigarette smoke in both microhybrid and nanohybrid resin composites of three different manufacturers (Z100, Z350, Charisma, and Opallis). Samples of microhybrid (n= 40) and nanohybrid (n= 40) resin composites (A2) were prepared for each resin brand, totaling 240 samples. The samples were divided into subgroups: Control: control group without exposure; C5: five cigarettes, 25 minutes/ exposure; C10: 10 cigarettes, 50 minutes/ exposure; C20: 20 cigarettes, 100 minutes/ exposure. The samples were then photographed and color change was measured by a computerized image analysis. L*a*b* values were obtained and color change was calculated. The Kolmogorov-Smirnov test was used to examine data normality; color change associated with an individual brand and the number of smoked cigarettes was analyzed with differentiation across the groups by the Tukey test (P≤ 0.05). The student t-test (P≤ 0.05) was used for the differentiation of inorganic fillers. Th...

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